Design of a special welding machine for longit-udinal seam welding of long and thin-wall cylinder

MENG Lingtao

doi:10.7512/j.issn.1001-2303.2020.06.23

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Design of a special welding machine for longit-udinal seam welding of long and thin-wall cylinder
Vol. 50, Issue 6, Pages: 117-121(2020)
Published：2020
DOI： 10.7512/j.issn.1001-2303.2020.06.23
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DOI：

MENG Lingtao. Design of a special welding machine for longit-udinal seam welding of long and thin-wall cylinder[J]. Eletric Welding Machine2020, 50(6): 117-121. DOI： 10.7512/j.issn.1001-2303.2020.06.23.

摘要

长筒型薄壁件广泛应用于机械行业中的各类储存罐体的筒壁

其制造质量对罐体的安全性极其重要。针对长筒纵缝在拼焊时由于截面结构应力特点以及较长的焊道所导致的焊接专机难以控制焊缝质量、内表面焊接困难等问题

设计了一种长筒专用焊接专机。通过集成新型压梁结构与新型锁臂机结构

抵消钢板在棍弯、夹固时产生的弹性形变

保障长筒纵缝的焊接精度。同时采用单面焊双面成型技术

优化现有筒体焊接工艺流程和控制背面焊道成形

提高了焊接效率和焊缝质量

该专机满足能够满足长筒薄壁件焊接需求。

Abstract

Long and thin-wall cylinder are widely used in the machinery industry for the cylinder walls of various types of storage tanks. Its quality is extremely important to the safety requirements. In view of the cross-section structural stress and seam length during splicing welding

it is difficult to control the welding quality or finish the inner surface. This paper presents a special welding machine design for longitudinal seam welding of long and thin-wall cylinder. By integrating the new beam-pressing and the new arm-locking structure

the elastic deformation of the steel plate during the bending and clamping can be counteract to ensure the welding accuracy.Based on single-sided welding and double-sided forming technology

the existing cylinder welding process flow and inner-side forming control are optimized to improve the welding efficiency and quality. Experiments show the design of this special machine meets the welding requirements of long and thin-wall cylinder.